What is the primary function of an antianginal agent like Imdur?

The primary function of an antianginal agent like Imdur is the prophylaxis of angina, which involves the prevention of chest pain due to reduced blood supply to the heart muscle. Imdur, the brand name for the drug isosorbide mononitrate, functions by relaxing the blood vessels, which helps increase blood flow to the heart and reduces the workload on it. By preventing the episodes of angina, antianginal agents like Imdur help improve the quality of life for patients with conditions such as coronary artery disease.

Other options relate to different therapeutic areas. For example, relief of anxiety focuses on addressing psychological distress, while control of blood pressure targets hypertension rather than the specific manifestation of angina. Management of depression pertains to mental health and does not address anginal symptoms related to cardiac function. Thus, the role of Imdur and similar antianginal agents is specifically tailored to preventing angina rather than managing these other health issues.